Oil-burner.



J. L. LANDRY.

OIL BURNER.

APPLICATION FILED JULY 21, ma. 1,1 14,994, Patented oet. 27, 1914.

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JOSEPH i LEO IIANIDRSZ'` OF NAPOLEON VILLE,I LOUISIANA.

OIL-BURNER. i

Specilcation of Letters Patent.

Patented Oct. 27, 1914.

Application filed July 21?, 1913. Serial No. 780,270.

T aZZ whom 'it may concern: j

Be it known that I, JosnrI-rLno LANDRY, a citizen of the United States,`residing at Napoleonville, in the parish of Assumption and State ofLouisiana, have invented new `and useful Improvements in Oil-Burners,

of which the following is a specification.

This invention relates to liquid :fuel burners, particularly to thattype wherein steam or air under pressure is utilized in the 0peration ofthe burner, and is an improvement upon the burner disclosed in LettersIatent No. 1,047,250, granted December 17 The present invention hasamong its 0bjects and advantages to generally improve the operation andefficiency of the above noted patented burner; to feed heated air andcombustion products to the admixed` fuel and steam issuing from the saidburner; to provide a burnerwith an in-y creased suction and a relativelyheavy blast and to provide an improvementwherein the fuel, air and steamare admiXed during the direct passage of the fuel to the blast and tothe burner.

It is a further obj ect of the invention to provide a burner attachmentwhich is of simple construction, the same comprising but two partsadapted for interlocking engagement upon the outlet pipe or nozzle of aburner whereby to effect an increased suction and alsoto effect a morethorough mixing 0f air and gases with the fuel after it issues from theburner.

In carryingout these objects and advantages this invention comprises anattachment to the burner set forth in thesaid Ilet-` ters Patent No.1,047,250. Thisattachment is secured to the free end of the outlet pipe`of the burner which extends into the furnace beneath the boiler and isin the form of an induction tube of relatively large diameter providedat its rear end with a plurality of openings communicating with theinterior of the induction tube and with the furnace. A reducer is alsomounted `upon the forward end `of the outlet pipe and is containedwithin: the 1induction tube and from which passes the blast of theburner to thereby create a suction `in the rear end of the inductiontube for drawingin the heated air and combustion products of the furnaceand admixing the same with the already admiXed oil and steam.

Other objects and advantages of this invention will be `moreparticularly brought S out in the following detail description of thepresent embodiment of this invention disclosed in the referred toaccompanying drawings in whichj Figure 1 is a side elevation of `a`burner 1n position upon a steam boiler furnace, the

furnace plate being in section, and showing l the improvement appliedthereto.` Fg..2 is` a sectional elevation Iof the burner and at-` itachment in detail. j

Referring to the drawings in which like parts are designated bysimilar-,numerals of reference, and wherein the improved attachment isshown as applied to a burner, the burner ofsaid prior patent beingshown, 10 designates the body or main portion of the burner. This body10 comprises, preferably, a hollow elongated cylindrical member,slightly reduced and internally threaded at its `upper end, which end'is closed by a screw-plug 11. At the lower end ofthe l body 10, and atone side is a fuelfinlet branch 12 through which the oil, or otherliquid fuel is introduced into the burner. The intermediate portion ofthe body 10 is provided in its oppositeisideswith diametrically opposedinternally threaded projections 13, providing a passage through the body10 at right angles to the longitudinal axis of the same. Adjacent to thebody 10 is arranged a fluid supply pipe 14 having conncction at one endwith a pipe or other suitable source of steam `or air supply. The lowerend of the pipe 14 is connected to a U- shape feeding branch 15 by means`of a` 1()whensteam or air under pressure issues from the nozzle 18. Afeed control valve 19 is located upon the supply pipe la to regulate thesupply of air or steam to the branch 15. j

The supply pipe 14 is providechat a point preferably directly oppositethe inner projection 13, with a by-pass 20 terminating in a controllingvalve 24. From the valve 24 extends a blast nozzle 9.2 whichnozzleprojects This initial feed nozzle into the-adjacent projection 13,diametrically through the body 10, and into the opposite projection 13.The inner en d of the blast nozzle 22 near the valve 2l is provided withexternal threads engaging with a paoliing nut or gland 21, which lattermember engages the inner projection 13 to hold the nozzle 22 centrallyin the transverse passage through the body 10. From Fig. 2 of thedrawings it will be noted that this blastnozzle 22 is of relativelylarge diameter, and that it provides but a relatively small annularpassage about the end thereof. This peculiar formation of the blastnozzle is for the purpose of providing an increased suction in the bodyso that the exhausting steam or air from the nozzle 22 entrails a veryheavy hydro-carbon, which very heavyl hydro-carbon has not beenheretofore satisfactorily used. ln the outer projection 13 is securedone end of an outlet pipe 23 which extends forwardly from the burner andis adapted to project through the furnace plate 29, as shown in Fig. 1.This outlet pipe 23V is provided upon its outer end with an ex-L ternalscrew-threaded port-ion upon which is mounted an induction tube 31. Thistube 31 comprises a length of pipe of relatively large `diameter whichis reduced at its rear` end and provided with internal screw.

threads thereat. This reduced end of the induction tube constitutes asupporting sleeve 32 therefor, and engages upon the external threadedportion of the outlet pipe The rear end of the tube 31 is provided witha plurality of openings 33 establishing `a comkmunication between theinterior of the inlt will be noted that the suction nozzle 22 and thereducer or final nozzle 311 are located in direct line with the outletpipe 23 and the induction tube 31 so'that a true injector action is hadfor the feeding of the oil and steam to the induction tube and for thedelivery of the same.

In Fig. 1 of the .drawing the burner with the improvement attachedthereto is shown in position upon a steam boiler furnace. 25 is theboiler and 26 a steam supply pipe leading from the boiler to the supplypipe 14. The fuel tank 27 is connected by a pipe 2S to the burnerinlet12, a valve 30 being located in the pipe 23 to control the flow offuel to the body 10. It will be observed that the outlet pipe 23 extendsthrough the furnace plate 29 to a position beneath the boiler 25, thattheinduction tube 31 is wholly dislburner and a consequent feeding ofthe liquid fuel into the outlet pipe and effecting the admixing of thefuel and steam or air. Since the outlet pipe 23 is of a substantiallength the steam is thoroughly admixed with the oil and this mixture isforced through the outlet pipe 23 into the reducer 34. vThe mixtureissues from the reducer 341 with considerable force and immediatelyspreads and fills the interior of the induction tube 31, creating asuction in the rear end of the tube 31, and drawing a quantity of thesurrounding heated gases of the furnace into the induction tube. Thesegases are admired with the mixture of oil and steam in the tube and allof these ingredients finally pass from the end of the induction tube ina thoroughly mixed condition.

It will be observed from Fig. 2 that the reducer 34 Lis screwed upon theoutlet pipe 23 until it abuts against the sleeve 32 of the burner tube.The reducer 3e when tightened against the sleeve serves in the capacityof a jam nut to interlock the burner tube 31 upon the outlet pipe v23.

TvVhat is claimed isln combination with a burner tube, a relativelylarge induction tube having an integral reduced inner end constituting asleeve portion engaging in threaded relation upon the end of said burnertube whereby to support the induction tube, the induction tube beingfurther providedy with a `plurality of lateral openings forwardly ofsaid sleeve portion, and a reduced nozzle in the induction tube havingan integral enlarged inner end adapted for threaded engagement upon theburner tube and to be jammed against said sleeve portion whereby tolock` said vsleeve portion ,upon the end of the burner tube, said nozzlebeing adapted to inject a relatively line jet of fuel from the burnertube into said induction tube.

In testimonywhereof I have hereunto set my hand in presence of twosubscribing witnesses.

JOSEPH LEO LANDRY.

Copies of this patent may be obtained. for :Eve cents each,` byaddressing the Commissioner of Eatents. Washington, D. G.

